54 Rev. F. D. Morice on male terminal segments and 



From the circumstance that the sixth ventral segment 

 in the $ is almost invariably testaceous, it seems to me 

 possible that this, and not the species I have above accepted 

 as ligatus, is the species described under that name by 

 Erichson. He gives this character, and I have not 

 observed it in the $ $ of what I have called ligatus. But 

 without a great deal more material I should not venture 

 to do more than throw out this as a suggestion. 



Prof. Perez has kindly sent me the dissected apex of a 

 species which, after seeing my lohalericus, he considers to 

 be distinct from it. I do not see myself that the dissections 

 differ from my own oi phalericw?. If the two species are 

 identical, his name — foveolaris, Perez — will have priority 

 over mine. 



But considering that coriandri, a very different species 

 from ijhalericus, shows the same dissection characters, I am 

 quite prepared to believe that foveolaris is a third distinct 

 species of the same group. As I have only seen its 

 dissection, and not examined the insect itself, it does not 

 of course appear in my Tables. 



18. Davicsanus, Smith. PI. VII, 18, 18«. PI. IX, 41, 50. 



The commonest species in this country, and widely 

 distributed over Europe. 



Its seventh ventral plate could onl}' be confounded with 

 that of hrevicoQ'nis, from which species the greatly produced 

 apices of the wings in the sagittse distinguish it immedi- 

 ately. The external characters of the two species are very 

 different. 



19. Ficistigma, Thoms. PI. VII, 19, 19a. PL IX, 53,60. 



Not uncommon in certain localities in this country, it 

 occurs also in the Alps, and Thomson describes it from 

 Scandinavia. 



The seventh ventral plate is extremely distinctive, it is 

 curled laterally in such a manner, that (viewed either dorsally 

 or ventrally) the lateral margins of the lobes look quite 

 straight and perpendicular, they also seem to project in 

 the basal direction beyond the basal margins of the lobes, 

 forming with them a sort of angular incision in which 

 appears a peculiar fringe of diagonal hairs. The apical 

 margin of each lobe has a sort of tooth-like production 

 before it meets the interior margin, which contrasts 



